| 摘要 |
PROBLEM TO BE SOLVED: To perform the position control of a polytopic filter in reproduction at a high speed, in an angle multiplex system hologram device.SOLUTION: An optical information reproducing device includes a laser light source 101 which emits reference light 107, a storage part which stores the address information of an optical information recording medium 1, an address reception part which receives a reproduced address, a filter part 114 which includes an opening, a determination part which determines whether or not the address received by using the address received by the address reception part and the address information of the optical information storage medium 1 stored in the storage part is a predetermined address, a position control switching part 137 which determines the position control method of the filter part 114 according to the address determined by the determination part, and a control part 141 which performs the position control of the filter part 114 by using the position control method determined by the position control switching part 137. |
